| 摘要 |
The invention relates to a heat pump according to the invention that is substantially characterized by the following elements: a main circuit having heat exchangers (11, 12) for exchanging heat between a working medium and surroundings, a main-circuit compressor (1) for compressing the working medium from a main-circuit suction pressure to a main-circuit working pressure, a main-circuit expansion throttle (8) between the second external heat exchanger and the first heat exchanger, the heat exchangers, the compressor, and the main-circuit expansion throttle being connected together to form the main circuit, a secondary circuit having a separate secondary-circuit compressor (2) and a secondary-circuit expansion throttle (27), and a third, internal heat exchanger (13), which is designed to transfer heat from the main-circuit working medium, which is on the path from the second heat exchanger to the main-circuit expansion throttle, to the secondary-circuit heat-transfer medium at the secondary-circuit suction pressure, the main-circuit compressor (1) and the secondary-circuit compressor (2) being arranged in such a way that the main-circuit suction pressure and the secondary-circuit suction pressure are independent of each other. |
